Boneham P2012EJ Press Fit Headless Drill Bushing Steel

Product Description

The BONEHAM P2012EJ is a press fit headless drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to ANSI standards and manufactured from steel hardened to 60 to 65 HRC, this bushing delivers consistent bore alignment and long service life in production jig and fixture applications. The 0.144 inch inside diameter accepts a Number 27 wire gauge drill, with an inside diameter tolerance of plus 0.0001 to plus 0.0004 inches for tight, repeatable guidance. The 5/16 inch body outside diameter and 3/4 inch overall length suit compact fixture designs where head clearance is not available.

This bushing is used in machine shop, toolroom, and production manufacturing environments where a permanent, non-renewable bushing is required. The headless profile allows the bushing to sit flush within the jig plate, making it well suited for applications with tight vertical clearance or multi-station fixtures. Machinists and tool and die makers press this style of bushing into hardened or unhardened jig plates as a fixed, long-term guide. It is not intended for applications requiring bushing rotation or easy field replacement.

Key Features

• Press fit installation method — seats permanently into the jig plate bore without fasteners
• Headless design provides flush seating where overhead clearance is limited
• Steel construction hardened to 60 to 65 HRC for wear resistance under repeated tool passes
• Inside diameter tolerance of plus 0.0001 to plus 0.0004 inches ensures accurate tool guidance
• Meets ANSI standards for drill bushing geometry and dimensional consistency
• Non-renewable design suited for permanent fixture installations

Compatibility

Designed as an ANSI-standard press fit headless drill bushing for use in jig plates and tooling fixtures requiring a permanent, flush-mount guide bushing.

Installation Notes

Installation is typically performed by a machinist or tool and die maker using a hydraulic or arbor press. The receiving bore in the jig plate must be machined to the appropriate press fit tolerance to ensure proper retention. Never drive the bushing in with a hammer directly on the bore face, as this can damage the inside diameter. Confirm the bushing is fully seated and flush before commencing any drilling operation.